Moksh2210-web/Calculator ? reverse-engineered prompt

Build me a simple Python calculator that runs from one file and lets me do basic math like add, subtract, multiply, and divide.

I want it to feel easy to use, like it asks for the numbers and the operation, then shows the result clearly. Please make the answers accurate up to 3 decimal places, and handle bad input nicely so it does not crash if I type something wrong or try to divide by zero.

Keep it simple and clean, since this is just a small calculator program. If you can, make it loop so I can do more than one calculation without restarting every time, and let me quit when I want. Also add a few comments so the code is easy to understand. If anything is unclear, use your best judgment and keep it straightforward.